GPU for Enscape, Twinmotion, D5 Render, Lumion: which NVIDIA RTX card reaches which tier

GPU memory for Enscape, Twinmotion, D5 Render and Lumion, side by side

Enscape, Twinmotion, D5 Render and Lumion each state the GPU for real-time architectural visualisation in their own way. Enscape names 4 GB as the minimum and 8 GB as recommended, Twinmotion 6 GB and 12 GB for its high-end tier, Lumion 2026 names 6, 10 and 16 GB, and D5 Render names cards where the others name memory. A card with 16 GB, such as the NVIDIA RTX 2000 Ada Generation or the NVIDIA RTX PRO 2000 Blackwell, reaches every memory figure these four makers print.

Chaos, System Requirements of Enscape (last updated 19 March 2026); Epic Games, Hardware and Software Specifications for Twinmotion (undated); D5 Render, System Requirements (undated, names D5 3.1); Lumion, system requirements for Lumion 2026 (undated); all read 10 November 2026.

Enscape and Twinmotion state their figures as dedicated memory: Enscape writes that the GPU must have dedicated VRAM and not the shared memory of an integrated graphics chip, and Twinmotion's lines name dedicated VRAM. We compare all figures directly with the memory printed on a card's datasheet.

NVIDIA RTX cards from 4 to 48 GB against the makers' memory figures

card memory from NVIDIA's datasheets; makers' figures as in the first table. The comparison is by memory only.

D5 Render has no memory tiers to compare with. Its list of supported GPUs names all nine cards of the table: the RTX A400, RTX A1000, RTX 2000 Ada, RTX 4500 Ada and RTX 5000 Ada, and the RTX PRO 2000, 4000, 4500 and 5000 Blackwell, the last two without edition or memory size.

The table compares memory and nothing else, and the makers set further conditions. Lumion asks for a G3DMark score of 8,000, 14,000 and 22,000 for its three tiers, Twinmotion for a benchmark score of 10,000 and 20,000, and Enscape's recommended and VR rows name example cards of the GeForce and Radeon lines beside the memory. We checked none of these conditions for any card, so the table does not say that a card meets a tier. Lumion's own examples show why this matters: for its recommended tier it names, in its spelling, the "NVIDIA Quadro RTX 2000 ADA", a card whose 16 GB equal the memory figure of the high-end tier.

One card of this series with display outputs is missing from D5's list: the NVIDIA RTX 2000E Ada Generation, the single-slot 16 GB card (specs, buy page). That means not listed; the page says nothing further about it.

Each card in the table can be ordered from us for delivery in the EU; let us know the visualisation software, the size of your typical scenes and the number of seats, and our written quote reaches you within one business day.

Four claims the makers' pages correct

"D5 Render needs an RTX card." D5's page states "Minimum requirement: Nvidia GTX 1060, Intel Arc A3, AMD RX 6400" and explains that its real-time ray tracing is built on DXR of Windows systems. The requirement is DXR support, and the list of supported GPUs runs from that minimum to the RTX PRO Blackwell cards. D5 2.7 and later needs NVIDIA driver 527.27 or above to open scene files.

"Enscape needs RTX and uses every GPU in the machine." Enscape's minimum is an NVIDIA or AMD dedicated GPU with 4 GB that supports Vulkan 1.1, from the GeForce GTX 10 series and the Quadro P series onwards. Hardware-accelerated ray tracing is an option, and the page excludes it for the GTX 1660 line and for NVIDIA's T1000 and T2000; NVIDIA's T1000 datasheet lists no RT Cores. With several GPUs installed, Enscape uses only one of them, and SLI is on its list of unsupported hardware. For VR the page adds that the clock speed of the GPU matters more than the amount of VRAM.

"Chaos Vantage runs on any workstation card." Vantage requires a DXR-compatible GPU, for NVIDIA an RTX series card or newer, with driver 515 or newer, and it takes a maximum of two GPUs. Its page gives no GPU memory figure and asks for system RAM that equals or exceeds the GPU memory.

"Two cards give twice the memory." D5 writes that it "does not support multi-graphics card parallel/interconnected operation" and advises keeping one card of high performance. Enscape uses one GPU. For V-Ray GPU, Chaos states that the entire scene must fit into GPU memory and, with cards of different sizes, into the smallest; memory pooling over NVLink is described only for larger cards before the Ada generation.

One card, sized for the scene

Since Enscape and D5 Render work on a single GPU, the purchase for these seats is one card with enough memory, and the tiers above end at 16 GB. What lies beyond is a question of scene size, on which the makers speak in words. D5's blog notes that large 4K to 8K textures and high-poly assets can saturate GPUs with 6 to 12 GB. Chaos gives no figure for V-Ray GPU and ties memory to the whole scene. Twinmotion rules out Lumen for its minimum tier because of the higher memory demands and recommends at least 8 GB for the Path tracer.

NVIDIA datasheets of the nine cards (dates between August 2023 and June 2026).

Our recommendation by seat:

• Design seats that check a model in Enscape or D5 now and then. The RTX A1000 reaches Enscape's recommended 8 GB in a single 50 W slot. The RTX A400 stays at Enscape's minimum and lies below the minimum of Twinmotion and Lumion, so we do not recommend it for visualisation.
• Visualisation as daily work. A 16 GB card, the RTX 2000 Ada or the RTX PRO 2000 Blackwell, both at 70 W without a power cable. The comparison RTX A1000 vs RTX 2000 Ada and RTX PRO 2000 covers the step from 8 to 16 GB.
• Large scenes, path tracing, 4K output. The 24 GB NVIDIA RTX PRO 4000 Blackwell or the 32 GB NVIDIA RTX PRO 4500 Blackwell Workstation Edition; the first takes one slot, the second two. See RTX PRO 2000 vs RTX PRO 4000 Blackwell and RTX PRO 4000 vs RTX PRO 4500 Blackwell. The NVIDIA RTX 4500 Ada Generation and the NVIDIA RTX 5000 Ada Generation offer the same two memory sizes for offices that have standardised on Ada.
• Scenes beyond 32 GB. The NVIDIA RTX PRO 5000 Blackwell with 48 GB, compared in RTX PRO 4500 vs RTX PRO 5000 Blackwell. The cards above 48 GB are on our GPU page.

Chaos Vantage, V-Ray GPU and Unreal Engine beside the four

Where a second tool runs next to the real-time renderer, its rules differ. Epic's requirements for Unreal Engine workstations and nDisplay render nodes are set out in our article on the RTX PRO 4500 for Unreal Engine.

Chaos Vantage page (undated); Chaos support article on V-Ray GPU requirements ("updated 3 months ago"); Epic Games, Unreal Engine 5.9 specifications; Chaos support article on Corona and V-Ray ("updated 27 days ago"); read 10 November 2026.

For V-Ray GPU, Chaos also recommends system memory of at least twice the GPU memory and, in machines with several GPUs, six physical processor cores per GPU. Final-frame rendering on several cards is a server topic, covered in our article on the GPU render server, and NVIDIA Omniverse has requirements of its own, which our article on Omniverse system requirements lists. The CAD and BIM programs that feed these renderers have memory lines of their own: see the GPU for AutoCAD, Revit and Inventor and the GPU for CAD guide.

Drivers and Windows versions the makers name

The driver lines on these pages differ in kind. D5 asks for NVIDIA driver 527.27 or above, Chaos Vantage requires 515 or newer and recommends 530 or newer, and Enscape and Twinmotion ask for the latest available drivers. For V-Ray GPU, Chaos names the 610.62 Studio driver as its currently recommended Windows driver and gives no minimum. The cards in this guide run on the NVIDIA RTX Enterprise Production Branch driver, whose current Windows releases are 621.14 of 4 November 2026, 597.30 and 582.99; all three list every card named here. By version number, 621.14 lies above every figure the makers name; 597.30 and 582.99 lie above the lines of D5 and Vantage and below Chaos's recommendation for V-Ray GPU.

On the operating system, Enscape names Windows 10 or higher and does not officially support Windows 11 on ARM, D5 names Windows 10 from version 1809, and Vantage Windows 10 from update 2004. NVIDIA's release notes for 621.14 state that Release 620 will be the last driver branch to support Windows 10, which is worth knowing before a fleet of visualisation seats is planned for several years.

What the workstation has to provide for the larger cards

Up to 16 GB the cards ask little of the chassis. The RTX A1000 takes one slot; NVIDIA's datasheet gives it a maximum power consumption of 50 W and names no auxiliary power connector. The two 16 GB cards take two slots and, by NVIDIA's quick start guides, use no power cable. From 24 GB a cable is required. The RTX PRO 4000 Blackwell has one PCIe CEM5 16-pin connector, and NVIDIA's quick start guide lists an adapter from one 8-pin PCIe cable in its box; for the RTX PRO 4500 Workstation Edition and the RTX PRO 5000 Blackwell the adapter starts from two 8-pin cables. NVIDIA publishes no power-supply wattage for these cards, so the board power in the table is added to the load the system already has.

For system memory, NVIDIA's quick start guide for the Blackwell cards asks for at least as much RAM as GPU memory and recommends twice as much. That matches Vantage's rule and the factor Chaos gives for V-Ray GPU, and it means 48 to 96 GB of RAM beside a 48 GB card.

What has been measured: SPECviewperf and Puget Systems

For these programs we found few published measurements on the cards. In SPECviewperf 15.0, an HP Z6 G5 A with an RTX 5000 Ada reached a composite of 71.01 in the enscape-01 viewset and 96.15 in unreal_engine-01 at Full HD, in a run of 16 April 2025. Puget Systems' content creation roundup of 18 December 2025 compared each Blackwell card with the Ada card of the same number on one Ryzen 9 9950X3D system.

Puget Systems, "2025 Professional GPU Content Creation Roundup", 18 December 2025; Unreal Engine 5.5 and V-Ray 6; percentages from the article's text; the text we read does not say whether the RTX PRO 5000 had 48 or 72 GB.

Apart from the SPECviewperf viewset above, we found no published measurement of Enscape, Twinmotion, D5 Render or Lumion on any card in this guide. The eleven cards of this series, with the comparisons between neighbours, are laid out in our NVIDIA RTX workstation GPU guide. If the choice between two sizes is open, tell us the renderer, the output resolution and the chassis of the workstation, and we quote the card that fits, or both.

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